KOReader to Obsidian Highlight Import

callouts.css

.callout[data-callout="stylish"] {
    --callout-color: var(--color-purple-rgb);
    --callout-icon: lucide-brush;
}

Highlight Companion

--- START: <% Math.random().toString(36).substring(2, 8) %> ---
<% tp.file.cursor() %>
--- END ---

KOReader Highlights.js

// <%*
// Uncomment the line before this one.
const NOTE_STYLES = {
  yellow: {
	type: "quote",
	title: "Quotable/Concept/General Idea",
  },
  gray: {
	type: "quote",
	title: "Quotable/Concept/General Idea",
  },
  blue: {
	type: "important",
	title: "Striking/Intense",
  },
  red: {
	type: "danger",
	title: "In Discord",
  },
  green: {
	type: "question",
	title: "Thought Provoking",
  },
  olive: {
    type: "sceptic",
    title: "Sceptic"
  },
  orange: {
    type: "warning",
    title: "Unsound"
  },
  purple: {
    type: "stylish",
    title: "Stylish"
  }
};

const YAMLFrontMatter = /^---\s*[\s\S]*?\s*---/;

async function get_supplements() {
    const data = {}
    const sFile = await tp.system.suggester(
    (item) => item.basename,
    tp.app.vault.getMarkdownFiles().filter((item) => item.path.startsWith("Unprocessed")),
    false,
    "Choose a note supplement, if any."
    );
    if (sFile == null) {
        return data
    }
    let content = await tp.app.vault.read(sFile);
    content = content.replace(YAMLFrontMatter, "").trim()
    console.log(content);
    
    content.split('--- END ---').forEach((section) => {
        section = section.trim()
        if (section.length > 0 && section.startsWith('--- START: ')) {
            const [header, body] = section.split("\n", 2);
            const id = header.match(/--- START: (\w+) ---/)?.[1];
            data[id] = body
        }
    })
    return data
}

function format_koreader_percentages(page, total) {
	if (page && total) {
	     if (typeof page == "string") {
	         page = parseInt(page)
	         if (page == NaN) {
	              return ""
	         }
	     }
		return `${((page / total) * 100).toFixed(2)}%`;
	}
	return "";
}

function format_note(text) {
    return text.split('\n').map((p) => '> ' + p).join("\n")
}

function format_koreader_json_highlights(content, supplements) {
	const data = JSON.parse(content);
    console.log(data);
    let output = `---\ntitle: "${data.title}"\naliases: ["Notes from ${data.title}"]\nauthor: "${data.author}"\n---\n# ${data.title}\n##### ${data.author}`;

	let current_chapter = "";
	for (const entry of data.entries) {
	  if (entry.text) {
		if (entry.chapter != current_chapter) {
		  output += `\n\n## ${entry.chapter}\n`;
		  current_chapter = entry.chapter;
		}
		output += `\n### Page: ${entry.page} (${format_koreader_percentages(entry.page, data.number_of_pages)}) @ ${window.moment.unix(entry.time).format("DD MMM YYYY hh:mm:ss A")}\n`;
		output += `\n${entry.text}`;
		const note_type = NOTE_STYLES[entry.color];
		output += `\n\n> [!${note_type.type}] ${note_type.title}`;
		if (entry.note) {
        let note = entry.note;
        if (note.startsWith("#") && note.length == 7) {
          const id = note.slice(1);
          if (supplements[id]) {
              note = supplements[id]
          }
        }
		  if (note.length > 50 || note.includes("\n")) {
			output += `\n${format_note(note)}`;
		  } else {
			output += `: ${note}`;
		  }
		  output += "\n";
		}
		output += "\n";
	  }
	}
	return output;
}

const content = await tp.system.prompt("Paste the JSON content", null, true, true);
let supplements = await get_supplements();
const output = format_koreader_json_highlights(content, supplements);
let file = app.workspace.getActiveFile();
await app.vault.modify(file, output);
// Uncomment the line after this one.
// %>